Iran is seeking “many billions of dollars” in payments from the United States in exchange for the release of several U.S. hostages still being detained in Iran, according to reports by Iran’s state-controlled press that are reigniting debate over the Obama administration’s decision earlier this year to pay Iran $1.7 billion in cash.

Senior Iranian officials, including the country’s president, have been floating the possibility of further payments from the United States for months. Since the White House agreed to pay Tehran $1.7 billion in cash earlier this year as part of a deal bound up in the release of American hostages, Iran has captured several more U.S. citizens.

Future payments to Iran could reach as much as $2 billion, according to sources familiar with the matter, who said that Iran is detaining U.S. citizens in Iran’s notorious Evin prison where inmates are routinely tortured and abused.

Iranian news sources close to the country’s Revolutionary Guard Corps, or IRGC, which has been handling prisoner swaps with the United States, reported on Tuesday that Iran expects “many billions of dollars to release” those U.S. citizens still being detained.”

“We should wait and see, the U.S. will offer … many billions of dollars to release” American businessman Siamak Namazi and his father Baquer, who was abducted by Iran after the United States paid Iran the $1.7 billion, according to the country’s Mashregh News outlet, which has close ties to the IRGC’s intelligence apparatus.

The Persian language news report was independently translated for the Washington Free Beacon.